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57. charges q, q, and-q are placed on the x-axis at x = 0, x = 4 m, and x = 6 m, respectively. At which of the following points does the electric field have the greatest magnitude? a. x 3 m b. x = 5 m c. x 8 m d. The electric field has the same magnitude at all three positionsPlease show work and provide a thorough explanation

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